| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [be] [prep] a | 789 |
|
| 2 | but [noun prp] [be] a | 151 |
|
| 3 | but [noun prp] [be] [prep] | 114 |
|
| 4 | but [be] [prep] a | 19 |
|
| 5 | but [noun prp] [prep] a | 8 |
|
